Aroma diffuser



FIG. 1 is a perspective view of an aroma diffuser according to a first embodiment.

FIG. 2 is a front view thereof.

FIG. 3 is a back view thereof.

FIG. 4 is left view thereof.

FIG. 5 is a right view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the Figures are for the purpose of illustrating portions of the aroma diffuser and form no part of the claimed design. 

CLAIM The ornamental design for an aroma diffuser, as shown and described. 